Self-preheating gas heating preheating furnace

Abstract

The utility model provides a kind of self-preheating gas heating preheating furnace, including furnace body, transmission component, several circulation components and several heating devices;The furnace body has furnace cavity inside, the transmission component is installed in the furnace cavity, workpiece is transmitted by the transmission component and passes through the furnace cavity, the furnace cavity is divided into several sections along workpiece transmission direction, each the section is combined with the circulation component and several heating devices;The circulation component and several heating devices are arranged at the top of the transmission component, and several heating devices are arranged at the bottom of the transmission component;The heating device is self-preheating gas heating device.The self-preheating gas heating preheating furnace is divided into sections, and the furnace gas series flow is reduced, the temperature control precision and stability are better;The self-preheating gas heating preheating furnace uses self-preheating heating device, is energy-efficient, the energy utilization rate is higher, and energy consumption is lower.

Description

Technical Field

[0001] This utility model relates to the technical field of preheating furnaces, and more precisely to a self-preheating gas-fired preheating furnace. Background Technology

[0002] Preheating furnaces are commonly used equipment in industrial production. They preheat workpieces that require heat treatment, reducing the heating time for subsequent heat treatment and thus improving overall processing efficiency. Preheating furnaces are widely used in the preheating process of various parts, and their treatment effect directly affects product performance.

[0003] Existing preheating furnaces generally consist of a furnace body and a heating device installed in conjunction with it. The workpiece is heated by the heating device as it is conveyed through the furnace body, completing the preheating process. The furnace cavity of existing preheating furnaces is mostly a single-piece structure, which allows for easy cross-flow of furnace gases, making precise temperature control difficult in different areas of the furnace and resulting in poor temperature uniformity, thus affecting the preheating quality of the workpiece. Furthermore, the heating devices in existing preheating furnaces generally have high energy consumption, leading to higher overall production costs.

[0004] In summary, there is a need in this field for a preheating furnace with higher temperature uniformity and lower energy consumption. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a self-preheating gas-fired preheating furnace, the furnace body adopts a partitioned structure, and is equipped with a circulation component and a self-preheating heating device to improve the temperature uniformity inside the furnace and reduce energy consumption.

[0006] To achieve the above objectives, this utility model provides a self-preheating gas-fired preheating furnace, comprising a furnace body, a transmission assembly, several circulation assemblies, and several heating devices; the furnace body has a furnace cavity inside, the transmission assembly is installed in the furnace cavity, the workpiece is transmitted through the furnace cavity by the transmission assembly, the furnace cavity is divided into several sections along the workpiece transmission direction, and each section is combined with the circulation assembly and several heating devices; the circulation assembly and several heating devices are located at the top of the transmission assembly, and several heating devices are located at the bottom of the transmission assembly; the heating device is a self-preheating gas-fired heating device.

[0007] Preferably, the furnace body includes a furnace wall and a furnace roof installed on top of the furnace wall, both of which are made of all-fiber structure.

[0008] Preferably, the circulation assembly includes a circulation fan and an air guide hood. The circulation fan is connected to the furnace top, the air guide hood is disposed inside the furnace cavity, and the air guide hood covers the upper part of the transmission assembly. The air outlet of the circulation fan is connected to the top of the air guide hood.

[0009] Preferably, the transmission component is a vertically movable transmission component.

[0010] Preferably, the circulating fan is equipped with a frequency converter.

[0011] Preferably, the heating device includes a burner tube, a heat exchanger, and a flue pipe. The burner tube is installed in the furnace cavity and has a plurality of burners. The burners are arranged facing the transmission assembly. The heat exchanger is combined with the furnace body and connected to the burner tube. The flue pipe is installed outside the furnace body and connected to the heat exchanger.

[0012] Preferably, the heat exchanger has an air inlet and a gas inlet, and the air input device is connected to the air inlet through a pipeline, and the gas input device is connected to the gas inlet through a pipeline.

[0013] Preferably, a number of natural gas leak detectors are installed on the furnace body.

[0014] Compared with existing technologies, the advantages of this self-preheating gas-fired preheating furnace are as follows: the furnace is divided into sections, reducing gas cross-flow and improving temperature control accuracy and stability; the furnace uses a self-preheating heating device, which is highly efficient and energy-saving, with higher energy utilization and lower energy consumption; the furnace's internal temperature uniformity is improved through a circulation component; the furnace is equipped with a natural gas leak detector and a natural gas leak detection alarm system, enhancing production safety; and the furnace eliminates the need for a muffle furnace, saving on muffle replacement costs and further reducing production costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 The image shown is a front view of a self-preheating gas-fired preheating furnace according to this application.

[0017] Figure 2 The image shown is a side view of a self-preheating gas-fired preheating furnace according to this application. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described through specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] like Figure 1 and Figure 2 As shown, this application discloses a self-preheating gas-fired preheating furnace, comprising a furnace body 1, a transmission assembly 13, several circulation assemblies 2, and several heating devices 3. The furnace body 1 has a furnace cavity 10 inside, and the transmission assembly 1 is installed in the furnace cavity 10. The workpiece is transported through the furnace cavity 10 by the transmission assembly 1. The furnace cavity 10 is divided into several sections 100 along the workpiece transport direction. Each section 100 is combined with a circulation assembly 2 and several heating devices 3. The circulation assembly 2 and several heating devices 3 are located at the top of the transmission assembly 1, and the several heating devices 3 are located at the bottom of the transmission assembly 1. The heating devices 3 are self-preheating gas-fired heating devices. The self-preheating gas-fired preheating furnace, through internal segmentation, can reduce gas crossflow and improve temperature control accuracy and stability. The use of self-preheating gas-fired heating devices 3 can improve energy utilization and reduce energy consumption. The circulation assembly 2 can improve the temperature uniformity within the furnace.

[0020] Preferably, each section 100 is equipped with a temperature detection device, which is connected to the control system of the self-preheating gas-fired preheating furnace. The control system adjusts the working status of the circulation component 2 and heating device 3 of the corresponding section 100 in a timely manner according to the detected temperature data, so as to ensure the accuracy and stability of the preheating process and improve product performance and yield.

[0021] Nitrogen gas is introduced into the furnace chamber 10 to form a protective atmosphere and reduce the oxygen concentration to below 50 PPM, which meets the brazing requirements of the product.

[0022] Specifically, the furnace body 1 includes a furnace wall 11 and a furnace roof 12 installed on top of the furnace wall 11. Both the furnace wall 11 and the furnace roof 12 adopt a full fiber structure, which has higher heat insulation performance and smaller heat storage capacity, which helps to improve the preheating effect and also helps to reduce energy consumption. The steel plate structure inside the furnace cavity 10 is made of SUS316 material, and expansion joints are left between the steel plates to prevent the steel plates from cracking due to mutual compression after heating.

[0023] The circulation assembly 2 includes a circulating fan 21 and an air guide hood 22. The circulating fan 21 is integrated with the furnace top 12, and the air guide hood 22 is located inside the furnace cavity 10, covering the upper part of the transmission assembly 1. The air outlet of the circulating fan 21 connects to the top of the air guide hood 22. The circulation assembly 2 enables rapid heating of the workpiece and improves the temperature uniformity within the furnace cavity 10. Furthermore, preferably, the transmission assembly 1 can move vertically, changing the volume of the furnace cavity 10 through the cooperation of the transmission assembly 1 and the air guide hood 22, thereby changing the air velocity within the furnace cavity 10, reaching a maximum air velocity of 5 m / s, achieving rapid heating of the workpiece. Preferably, the circulating fan 21 is equipped with a frequency converter, which can control the circulating fan 21 to change its air velocity as needed. Furthermore, adjacent circulating fans 21 are arranged with opposite left-right rotation directions and opposite up-down blowing directions, forming convection within the furnace cavity 10, further improving the temperature uniformity within the furnace cavity 10.

[0024] The heating device 3 includes a burner tube 31, a heat exchanger 32, and a flue pipe 33. The burner tube 31 is installed in the furnace cavity 10 and has several burners facing the transmission assembly 13. The heat exchanger 32 is integrated with the furnace body 1 and connected to the burner tube 31. The flue pipe 33 is installed outside the furnace body 1 and connected to the heat exchanger 32. The heat exchanger 32 has an air inlet 321 and a gas inlet 322. An air input device is connected to the air inlet 321 through a pipe, and a gas input device is connected to the gas inlet 322 through a pipe. The heat exchanger 32 collects the flue gas generated by the combustion of the burner tube 31 and heats the air entering the heat exchanger 32, preheating the air and thus improving the thermal energy utilization rate.

[0025] Several natural gas leak detectors are installed on the furnace body 1, which, combined with the natural gas leak detection and alarm system, enhances production safety.

[0026] The self-preheating gas-fired preheating furnace eliminates the need for a muffle, saving the cost of replacing a muffle and further reducing production costs.

[0027] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-preheating gas-fired preheating furnace, characterized in that, The furnace includes a furnace body, a transmission assembly, several circulation assemblies, and several heating devices. The furnace body has a furnace cavity inside, and the transmission assembly is installed in the furnace cavity. The workpiece is transmitted through the furnace cavity by the transmission assembly. The furnace cavity is divided into several sections along the workpiece transmission direction. Each section is combined with the circulation assembly and several heating devices. The circulation assembly and several heating devices are located at the top of the transmission assembly, and several heating devices are located at the bottom of the transmission assembly. The heating devices are self-preheating gas heating devices.

2. The self-preheating gas-fired preheating furnace as described in claim 1, characterized in that, The furnace body includes a furnace wall and a furnace roof installed on top of the furnace wall, both of which are made of all-fiber structure.

3. The self-preheating gas-fired preheating furnace as described in claim 2, characterized in that, The circulation assembly includes a circulating fan and an air guide hood. The circulating fan is connected to the furnace top, the air guide hood is located inside the furnace cavity, and the air guide hood covers the upper part of the transmission assembly. The air outlet of the circulating fan is connected to the top of the air guide hood.

4. The self-preheating gas-fired preheating furnace as described in claim 3, characterized in that, The transmission component is a vertically movable transmission component.

5. The self-preheating gas-fired preheating furnace as described in claim 3, characterized in that, The circulating fan is equipped with a frequency converter.

6. The self-preheating gas-fired preheating furnace as described in claim 1, characterized in that, The heating device includes a burner tube, a heat exchanger, and a flue pipe. The burner tube is installed in the furnace cavity and has a plurality of burners. The burners are arranged facing the transmission assembly. The heat exchanger is combined with the furnace body and connected to the burner tube. The flue pipe is installed outside the furnace body and connected to the heat exchanger.

7. The self-preheating gas-fired preheating furnace as described in claim 6, characterized in that, The heat exchanger has an air inlet and a gas inlet. An air input device is connected to the air inlet through a pipeline, and a gas input device is connected to the gas inlet through a pipeline.

8. The self-preheating gas-fired preheating furnace as described in claim 1, characterized in that, Several natural gas leak detectors are installed on the furnace body.

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